Puller



Aug. 23, 1932.

' J. T. cosGRovE" FULLER Filed May 4. 1931 R) m m m 7/7 Z'Cbgrrame. BY

; ATTORNEYS.

Patented Aug. 23, 1932- JOHN '1. COBGROVE, OI KANSAS Gm, MISSOURI FULLERApplication and m 4, 1931. Serial a... 585,016.

This invention relates to tools, and particularly apparatus adapted forusein connectlon' with imparting an instantaneous impelling An evenfurtherobject of this invention is I the contemplation of a pullerhaving a novel combination of parts which coact to form an effectivetool which might be utilized in connection with imparting a force tomost any kind'of work.

Minor objects of the invention will appear during the course of thedetailed specification, referring to the accompanying drawing,

wherein:

Figure 1 is a side elevation of a tool in the form of an axle pullerembodying the present invention.

Fig. 2 is a perspective view of the same, on an enlarged scale, and withthe slidable weight entirely removed from the apparatus.

Fig. 3 is a still further enlarged vertical, fragmentary, sectional viewthrough the removable head of the puller and showing the same associatedwith an axle.

Fig. 4 is a vertical cross section through the rod, taken on line IV-IVof Fig. 1, and,

Fig. 5' is a perspective view of a modified form of rod which might beutilized when using the tool for purposes other than pulling an axle. I

Figs. 1 to 4 inclusive of the drawing illustrate a puller constructed inaccordance with the preferred form of the invention. A tool embodyingthe features contemplated is well adapted for use when it is desired todislodge an.axle. Since the necessary force cannot be imparted to thisautomobile art through the ordinary means, it is advisa 1e always toemploy apparatus as illustrated.

Like reference characters designate similar parts in Figs. 1 to 4inclusive, and the nu meral 8 designates a novelly constructed head, thewall 10 of which is formed to present a wedge-shaped notch 12 Whichengages the work as hereinafter set down. Wall 10 connects sides 14 ofthe U-shaped portion of head 8 and the base of this portion, indicatedby the numeral 16,.is provided with a hole 18 therethrough to receiveone end of rod 20. This end of rod 20 is threaded as at 22 to receivenut 24, after rod 20 has been passed through hole 18. The opposite endof rod 20 has formed thereon a stop 26 and a weight I 28 is slidablysupported by rod 20 between head 8 and st p 26.

Weight 28 has enlarged ends 30 to directly engage stop 26 and base 16 ofhead 8 to stop its movement along rod 20. A longitudinal bore 31 is castthrough weight 28 which slips over rod 20 when the apparatus isassembled. In practice, notch 12 fits over the work to be engaged andwhere the puller is used in connection with an axle 32, notch 12 fitsover the glreaded portion 34 thereof andbehind nut In practice, also, itis necessary to remove the wheel of the automobile before the puller isattached to axle 32. After the wheel-removing operation, nut 36 isreplaced and moved far enough along'threaded portion 34 to insure apositive grip and yet preclude stripping. 7

It is important that wall 10 be of material which springs sufiicientlyto keep the head from breaking when weight 28 is moved along rod 20against stop 26 in the direction of the arrow shown in Fig. 1. In themanufacture of head 8, this wall 10 may be welded to sides 14 orotherwise aflixed after notch 12 is cut and the material forming wall 10is treated as desired. I

The modified showing of a part of this apparatus illustrated in Fig. 5rendersclear a manner in which the puller might be used for purposesother than an axle puller. In this instance rod has a stop 102 rigidwith one end thereof, while a hook 114 is formed at the opposite end ofrod- 100. In this showing there is no Weight mounted upon rod 100, butthe combination illustrated in ill Fig. 1 is precisely the same andfurther comment is unnecessary.

The operation of this pulling apparatus, while made clear during thefore oing specification, might be emphasized y stating that an enormousforce is applied to axle 32 lon itudinalliy thereof, when weight 28 israpidly move against stop 26. The sudden ]erk is imparted directly toaxle 32 and since notch 12 is in longitudinal alinement with rod 20,there are no lateral strains to break a direct force. The varying widthof notch 12 obviously permits head 8 to en age axles of Variousdiameterand while the orm of head 8 illustrated is preferred, it must beunderstood that modifications as to specific structure might be madewithout altering the effectiveness of the puller. I

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A puller comprising a rod; a weight slidably supported thereby; and ahead formed on each end respectively of said rod; one of said headsformed to engage the work and including a U-shaped body, said rodslidably and rotatably engaging the base of said body, and a notchedwall extending between the ends of said U-shaped body, said notch beingin longitudinal alignment with said rod, said notched wall beingresilient, whereby to flex and absorb destructive shocks when the pulleris in use.

2. A puller comprising a rod; a stop integral with the red at one endthereof; a threaded portion at the other end of said rod; a U shapedbody having a hole through the base thereof, said rod slidably engagingsaid body by passin through said hole whereby to project the t readedportion between the sides of said U-shaped body; a nut on the threadedportion of said rod to limit the sliding movement thereof in onedirection; a weight slidably supported by the rod intermediate the headand U-shaped body; and a work engaging wall joining the ends ofsaid bodysides said wall being resilient and adapted to flex to absorbdestructive shocks when the puller is being operated.

3. A puller comprising arod; a stop inengaging wall joinin the ends ofsaid U- signature. I,

JOHN T. f COSGROVE.

tegral with the rod at one end thereof; a

threaded portion at the other end of said rod; a nut on the threadedportionof said' rod; a weight slidably carried by the rod intermediatethe stop and nut; and a workengaging head mounted on the rod at thethreaded end thereof, said head having a U- shaped body having walls ofuniform thickness throughout, a hole formed through the base of saidbody of a diameter greater than the diameter of said rod, the rodpassing through said hole to project the said nut within the walls'ofsaid body whereby to per:

mit free rotation without longitudinal movement along the rod, and aresilient work-

